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Commit 6cf1ac42 by Paolo Bonzini Committed by Paolo Bonzini
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acx.m4: Fix fastcompare support for new-bootstrap. 

2004-04-28  Paolo Bonzini  <bonzini@gnu.org>

        * config/acx.m4: Fix fastcompare support for new-bootstrap.
        * configure: Regenerate.

From-SVN: r81281
parent f964bd29
Showing with 58 additions and 21 deletions
ChangeLog
2004-04-28 Paolo Bonzini <bonzini@gnu.org>
* config/acx.m4: Fix fastcompare support for new-bootstrap.
* configure: Regenerate.
2004-04-27 Paolo Bonzini <bonzini@gnu.org>
Revert:
......
config/acx.m4
......@@ -193,3 +193,34 @@ else
have_gnat=no
fi
])
dnl 'make compare' can be significantly faster, if cmp itself can
dnl skip bytes instead of using tail. The test being performed is
dnl "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2"
dnl but we need to sink errors and handle broken shells. We also test
dnl for the parameter format "cmp file1 file2 skip1 skip2" which is
dnl accepted by cmp on some systems.
AC_DEFUN([ACX_PROG_CMP_IGNORE_INITIAL],
[AC_CACHE_CHECK([how to compare bootstrapped objects], gcc_cv_prog_cmp_skip,
[ echo abfoo >t1
echo cdfoo >t2
gcc_cv_prog_cmp_skip='tail +16c $$f1 > tmp-foo1; tail +16c $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2'
if cmp t1 t2 2 2 > /dev/null 2>&1; then
if cmp t1 t2 1 1 > /dev/null 2>&1; then
:
else
gcc_cv_prog_cmp_skip='cmp $$f1 $$f2 16 16'
fi
fi
if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then
if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then
:
else
gcc_cv_prog_cmp_skip='cmp --ignore-initial=16 $$f1 $$f2'
fi
fi
rm t1 t2
])
do_compare="$gcc_cv_prog_cmp_skip"
AC_SUBST(do_compare)
])
configure
......@@ -1855,7 +1855,7 @@ fi
# Extract the first word of "gcc", so it can be a program name with args.
set dummy gcc; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:1860: checking for $ac_word" >&5
echo "configure:1859: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
......@@ -1885,7 +1885,7 @@ if test -z "$CC"; then
# Extract the first word of "cc", so it can be a program name with args.
set dummy cc; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:1890: checking for $ac_word" >&5
echo "configure:1889: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
......@@ -1936,7 +1936,7 @@ fi
# Extract the first word of "cl", so it can be a program name with args.
set dummy cl; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:1941: checking for $ac_word" >&5
echo "configure:1940: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
......@@ -1968,7 +1968,7 @@ fi
fi
echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
echo "configure:1973: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
echo "configure:1972: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
ac_ext=c
# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
......@@ -1979,12 +1979,12 @@ cross_compiling=$ac_cv_prog_cc_cross
cat > conftest.$ac_ext << EOF
#line 1984 "configure"
#line 1983 "configure"
#include "confdefs.h"
main(){return(0);}
EOF
if { (eval echo configure:1989: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
if { (eval echo configure:1988: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
ac_cv_prog_cc_works=yes
# If we can't run a trivial program, we are probably using a cross compiler.
if (./conftest; exit) 2>/dev/null; then
......@@ -2010,12 +2010,12 @@ if test $ac_cv_prog_cc_works = no; then
{ echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
fi
echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
echo "configure:2015: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
echo "configure:2014: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
cross_compiling=$ac_cv_prog_cc_cross
echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
echo "configure:2020: checking whether we are using GNU C" >&5
echo "configure:2019: checking whether we are using GNU C" >&5
if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
......@@ -2024,7 +2024,7 @@ else
yes;
#endif
EOF
if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:2029: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:2028: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
ac_cv_prog_gcc=yes
else
ac_cv_prog_gcc=no
......@@ -2043,7 +2043,7 @@ ac_test_CFLAGS="${CFLAGS+set}"
ac_save_CFLAGS="$CFLAGS"
CFLAGS=
echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
echo "configure:2048: checking whether ${CC-cc} accepts -g" >&5
echo "configure:2047: checking whether ${CC-cc} accepts -g" >&5
if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
......@@ -2079,7 +2079,7 @@ fi
# Extract the first word of "${ac_tool_prefix}gnatbind", so it can be a program name with args.
set dummy ${ac_tool_prefix}gnatbind; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:2084: checking for $ac_word" >&5
echo "configure:2083: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_GNATBIND'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
......@@ -2111,7 +2111,7 @@ if test -n "$ac_tool_prefix"; then
# Extract the first word of "gnatbind", so it can be a program name with args.
set dummy gnatbind; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:2116: checking for $ac_word" >&5
echo "configure:2115: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_GNATBIND'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
......@@ -2144,7 +2144,7 @@ fi
fi
echo $ac_n "checking whether compiler driver understands Ada""... $ac_c" 1>&6
echo "configure:2149: checking whether compiler driver understands Ada" >&5
echo "configure:2148: checking whether compiler driver understands Ada" >&5
if eval "test \"`echo '$''{'acx_cv_cc_gcc_supports_ada'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
......@@ -2177,22 +2177,23 @@ else
fi
echo $ac_n "checking how to compare bootstrapped objects""... $ac_c" 1>&6
echo "configure:2182: checking how to compare bootstrapped objects" >&5
echo "configure:2181: checking how to compare bootstrapped objects" >&5
if eval "test \"`echo '$''{'gcc_cv_prog_cmp_skip'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
echo abfoo >t1
echo cdfoo >t2
gcc_cv_prog_cmp_skip='tail +16c $$f1 > tmp-foo1; tail +16c $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2'
if cmp t1 t2 2 2 > /dev/null 2>&1; then
if cmp t1 t2 1 1 > /dev/null 2>&1; then
:
else
gcc_cv_prog_cmp_skip='cmp $$f1 $$f2 16 16'
fi
fi
if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then
if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then
if cmp t1 t2 2 2 > /dev/null 2>&1; then
if cmp t1 t2 1 1 > /dev/null 2>&1; then
:
else
gcc_cv_prog_cmp_skip='cmp $$f1 $$f2 16 16'
fi
fi
:
else
gcc_cv_prog_cmp_skip='cmp --ignore-initial=16 $$f1 $$f2'
fi
......
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